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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Growth performance of hybrid bass and hybrid tilapia in conventional and active suspension intensive ponds
Year:
2001
Authors :
מילשטיין, אנה
;
.
צורן, מירון
;
.
Volume :
53
Co-Authors:
Milstein, A., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Avnimelech, Y., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Zoran, M., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Joseph, D., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Facilitators :
From page:
147
To page:
157
(
Total pages:
11
)
Abstract:
Recently developed, active suspension intensive ponds are based on the idea that fish ponds (aerated and mixed as required for the well-being of the fish) can also serve as water purification units. The present paper compares water quality and fish growth in conventional intensive ponds (daily water exchange 500%), with active suspension intensive ponds (daily exchange 8%). The fish tested were hybrid tilapia (Oreochromis niloticus -xt O. aureus), already known to perform well in active suspension units, and hybrid bass (Morone saxatilis -xt M. chrysops), which is commercially cultured in conventional intensive ponds. Water quality in the two types of intensive ponds differed as a result of the "internal water purification" vs "external water purification" approach. Bacterial development was greater in the active suspension ponds. Several parameters were affected by the different rate of water exchange, including temperature and removal of ammonium. The latter was lower in active suspension ponds due to reduced washout of particles and their associated nitrifying bacteria. Nitrification was greater in tilapia active suspension ponds because of grazing by this fish. Active suspension units operated with less than 2% of the water used in the conventional intensive ponds. Hybrid bass and hybrid tilapia performed similarly well in both types of pond, indicating the economic advantage of culturing them in the water-saving active suspension system. Tilapia graze on suspended particles, leading to additional savings in feed costs. The good performance of hybrid bass in active suspension ponds is herein reported for the first time.
Note:
Related Files :
aquaculture1 (domain1)
fish culture
Growth
Hybrid bass
Oreochromis aureus
Oreochromis niloticus
pond
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31209
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:00
Scientific Publication
Growth performance of hybrid bass and hybrid tilapia in conventional and active suspension intensive ponds
53
Milstein, A., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Avnimelech, Y., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Zoran, M., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Joseph, D., Agriculture Research Organization, Fisheries Department, MP Hof HaCarmel 30820, Israel
Growth performance of hybrid bass and hybrid tilapia in conventional and active suspension intensive ponds
Recently developed, active suspension intensive ponds are based on the idea that fish ponds (aerated and mixed as required for the well-being of the fish) can also serve as water purification units. The present paper compares water quality and fish growth in conventional intensive ponds (daily water exchange 500%), with active suspension intensive ponds (daily exchange 8%). The fish tested were hybrid tilapia (Oreochromis niloticus -xt O. aureus), already known to perform well in active suspension units, and hybrid bass (Morone saxatilis -xt M. chrysops), which is commercially cultured in conventional intensive ponds. Water quality in the two types of intensive ponds differed as a result of the "internal water purification" vs "external water purification" approach. Bacterial development was greater in the active suspension ponds. Several parameters were affected by the different rate of water exchange, including temperature and removal of ammonium. The latter was lower in active suspension ponds due to reduced washout of particles and their associated nitrifying bacteria. Nitrification was greater in tilapia active suspension ponds because of grazing by this fish. Active suspension units operated with less than 2% of the water used in the conventional intensive ponds. Hybrid bass and hybrid tilapia performed similarly well in both types of pond, indicating the economic advantage of culturing them in the water-saving active suspension system. Tilapia graze on suspended particles, leading to additional savings in feed costs. The good performance of hybrid bass in active suspension ponds is herein reported for the first time.
Scientific Publication
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